Severina was the wife of Aurelian and was made Augusta c.274. When her husband was killed in battle it's believed that she ruled, if only nominally, during the interregnal period before Tacitus was nominated the next emperor.
AE Antoninianus
RIC 3, Estiot 1082, C 2 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAAVGG Exe: XXIR - Severina standing right on left, shaking hands with Aurelian to right. 274 (Rome).
RIC 4, Estiot 1440, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM Exe: E/XXI - Concordia standing left, holding standard in each hand. 275 (Rome). $76 3/13/05. RIC 4, Estiot 1440, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM Exe: Δ/XXI - Concordia standing left, holding standard in each hand. 275 (Rome). RIC 8, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM - Exe: PXXT - Concordia standing left, holding standard in each hand. September - November 275 (Ticinum). RIC 8, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM - Exe: SXXT - Concordia standing left, holding standard in each hand. September - November 275 (Ticinum). $16 1/10/03. RIC 9, C 12 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: PROVIDENDEOR - Fides standing to left, holding standard in each hand, facing Sol to right, raising hand and holding globe. 275 (Ticinum). RIC 13, C 8 Antoninianus Obv: SEVERINAEAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM Exe: /XXI or Exe: XXI or Exe: XXI - Concordia standing left, holding standard in each hand. 275 (Siscia). $130 1/20/03. RIC 16, C 2 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAAVGG Exe: /KA or /KA• or /KA•• - Severina standing right on left, shaking hands with Aurelian to right. 274 (Rome). RIC 18, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM Exe: XXI - Concordia standing left, holding standard in each hand. (Cyzicus). RIC 19, C 1 Antoninianus Obv: SEVERINAPFAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAAVG Exe: /XXI - Severina standing right on left, shaking hands with Aurelian to right. (Antioch). RIC 20, C 7 Antoninianus Obv: SEVERINAAVG - Diademed, draped bust right on crescent. Rev: CONCORDIAEMILITVM Exe: /XXI - Concordia standing left, holding standard in each hand. (Antioch).
AE Denarius
RIC 6, Göbl 141, C 14 Denarius Obv: SEVERINAAVG Exe: or /VSV - Diademed, draped bust right. Rev: VENVSFELIX - Venus standing left, holding apple and scepter. (Rome).
AE As
RIC 7 As Obv: SEVERINAAVG - Diademed, draped bust right. Rev: IVNOREGINA Exe: S - Juno standing left, holding patera and scepter; peacock to left. 274 (Rome).
RIC 7 As Obv: SEVERINAAVG - Diademed, draped bust right. Rev: IVNOREGINA Exe: Z - Juno standing left, holding patera and scepter; peacock to left. 274 (Rome).